What are layers? How are they useful?
What will be an ideal response?
Layers organize information in Photoshop. Found under Window > Layers, layers are useful when compositing images together, offering the ability to move up/down, hide/unhide, link, edit, and merge objects on specific layers.
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Notice that BGP transmits messages over TCP connections. What is a reason that BGP uses TCP to transmit its messages?
What will be an ideal response?
Run the programs by starting the server (don’t forget to specify a port number as a command-line argument) first, then the client. Conduct a session and observe the diagnostic messages displayed on both sides. Describe your observation of the sequence of events.
This exercise uses EchoServer1 and EchoClient1, which uses connectionless datagram sockets for the Echo service. Compile Echo*1.java (“javac Echo*1.java”). Then: